Fbedekick cowie



Patented Aug. 1, 1916.

GUWIE FREDERICK F. COWIE.

SHOCK ABSORBER,

APPLICATION FILED SEPT-20,1915.

Ll9324rL 18 is provided with a one-way valve or sucsitions.

. showing the springs l-2 in their normal po- Whentension is ererted to compress th e springs 12., the cylinder 2 held in the same position'but the. plunger 7' is ulled down. In? the pulling downthe end i with its attached parts 9,10 and 11,' a1r is allowed to home in'through the open ng 18, into the cylinder 2. Now on the IG-flCtlOIl when the spring stai'tsto return to its normal position, the end 7 of the plunger] is' pushed up in the cylinder-2, the one way VHl E or suction trap 19 closed bythe prese sure of theair and all the air in the cylinder Y: 2 has to be forced through the opening 17.

This opening l7 is small and will allow the air to'e'scapef only at a steady rate. Th1s. will make the re-action at a steady upward movement and not with a sudden jerk. The leather washer 9 will fit tightly against the inner side or the cylinder 2-and when it is oiled, the end'lf with its arious attached parts will make an air-tight'piston working in its cylinder 2. When it is desirous of putting more, oil into the cylinder 2, this can he put in through either Yopenings 17 or 18, without having to open any of the parts of the device. p f

It will thus be seen that I have provided a simple and efiective shock absorber, one

,which .can be manufactured cheaply and quickly, attached 'to springs on which it is to be used. 1,

While Iha'ye herein-shown and described one particular embodiment of myinvention, I wish it to be understood that I do not confine myself to all the precise details .of construction herein set forth by way of illustration, as modifications and variations may be made without departing from the spirit of the invention or scope ofthe appended claims. Whatlelaim as n'ewisrl. r

1*. A shock-absorber, comprising a cylinder'anda; U-shaped plunger, s'aiiit.cyli'n der/ havinga cap securely attechedto said cap having two openings, one ofifsaid openings beingprovided with a one-way exceeding the one end,

a round nut screwed thereon, a leather washer on said nut, said leather washer having its outer edge turned up, a washer and a nutholding the leather washer on said round nut, the other end of said plunger being attached to upper section of any spring, said cylinder, being secured to the lower section of said spring. v y

2. A shock-absorber, comprising a cylinder and a U-shaped plunger, said plunger having one-end working in said cylinder, said end of plunger being threaded and adapted toreccive a round nut, a leather washer, a. metal washer and a nut, all so curely: tightened together, said leather washer having its edge turned up, said plunger having its other end attached to the upper section of any spring, said cylinder being attached to the lower section of said spring, said cylinder being provided 'at its upper end with a cap, said cap having holes therein, one of said holes having av oneway valvetherein.

3., In combination with a. spring including upper and lower members, a cylinder secured to the lower member, a U-Shaped plunger having one end attached'to the upper member, a piston attached to the other end of the plunger and operating in said cylinder, said cylinder provided with two apertures, a check valve closing one of the apertures, whereliy upontmovcment of the spring members tdward each other air willbe drawn into the cyltnder through the check valve, and upon movement of the spring members away from each other the air will be forced from the cylindeihthrough the unobstructed aperture.

In testimony whereof I allix my signature in the presenceof two witnesses.

1 FREDERICK cowln. Witnesses; I

RUSSELL Cowm, Gowns. 

